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PSU GTX275 Power Supply

Discussion in 'Hardware' started by malaroo978, 10 Sep 2009.

  1. malaroo978

    malaroo978 What's a Dremel?

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    Hey guys, this might be somewhere already but I couldnt find it.

    I was thinking of upgrading my 7800GT to a GTX 275, but I dont know what power supply I will need. I have found someone say the GTX 275 needs 40A on the 12V rail, I however have the Seasonic S12-600W (which apparently has two 12V rails with 18A on each). So can I assume this wont work? In which case would it be worth just getting a GTX 260? or possible 260 SLI?

    Cheers guys.

    JC
     
  2. Combinho

    Combinho Ten kinds of awesome

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    260 SLI would need more power than a GTX 275. I would have thought that a decent 600W PSU should be able to handle a 275, depending on how power hungry the rest of your system is.
     
  3. malaroo978

    malaroo978 What's a Dremel?

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    Really? Is it based on older technology or something? I would hope my 600W seasonic would handle it.

    The rest of my system is:

    i7 860 on Asus P7P55D Deluxe with 4GB Corsair Dominator DDR3. 3 x 74GB Raptors and 1 x 320GB SATA hard drive. 1 x DVD-RW. No other peripherals. Anyone think it should be able to handle the gtx 275? looking at gaming at 1650x1050.

    By the way, random question.... does anyone know if a 360 would plug into a monitor of resolution 1650x1050 via hdmi and work?
     
  4. Thermal5

    Thermal5 R.I.P

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    I'd say it would, I'll be running i5 750, 4 GB DDR3 Corsair Ram, 3 x Sata Hard Drives, 1x DVD-RW, 1 x DVD-Rom, GTX 275.

    I'd say your PSU should easily be able to manage it although that said not sure about the 12 volt rails though being 18A each, total is 36 Amps, I think it would be enough, but my ThermalTake Toughpower 600 Watt has 48 Amps on the 12v rails and it works fine on that.
     
    Last edited: 13 Sep 2009
  5. ssenginss

    ssenginss What's a Dremel?

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    I think it's better not to risk your hardware, when I was thinking of buying my gtx 275 I read Nvidia specs recommending min. 700 Watt PSU. And as far as I know all new design 700 Watt PSU's has an output current of min. 40A @ +12V channel. I'm running my gtx275 with Thermaltake Thoughpower 850W 62A @ +12V
     
  6. Thermal5

    Thermal5 R.I.P

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    I disagree with a GTX 275 needing a minimum 700 Watt PSU, what a load of rubbish lol, I've been running a GTX 275 on a ThermalTake Toughpower 600 Watt with 48 Amps on 12v rails with no problems at all.

    The spec of the P.C i've been running it in is as follows.

    Core 2 Duo E8400 3 Ghz
    4 GB DDR 2 800 Mhz ram
    3 Sata Hard Drives
    IDE DVD-Rw Drive
    Sata DVD-Rom Drive
    Two 120 mm fans one standard and one L.E.D
    Arctic Cooling Freezer 7 Pro CPU cooler.

    And not had one problem, in my opinion a decent 600 Watt PSU such as ThermalTake etc will and does handle a GTX 275 with ease.

    To quote Jim Royle "700 Watts my a*se!"
     
  7. trig

    trig god's little mistake

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    you're current psu won't cut it, and not because of the watts, but because of the amps. you do need a minimum of 40 amps, or you will have issues trying to run a 275. a 500 watt psu would run your rig, if it had the amps.
     
  8. Zero_UK

    Zero_UK What's a Dremel?

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    Agreed, I've seen people with that issue before
     
  9. Jipa

    Jipa Avoiding the "I guess.." since 2004

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    600 W minimum? You must be f*n kidding me! I'm just now looking at a review where a i7 920 fitted with GTX275 pulls 250 Watts from the grid. At 80% efficiency that comes down to 200 watts on the secondary side.

    Now you can still share the wattage between the two lines by choosing the right cables, basically aim to have one line for the GFX and one for the rest.

    If that will not work or if you fry something then I promise to eat something disgusting and probably harmful.

    (there's the wattage graph: http://plaza.fi/muropaketti/artikkelit/naytonohjaimet/nvidia-geforce-gtx-275,3 Also please save me from any further "but... but Nvidia said 40 Amps" Clearly I'm a terrible ass and will never mention PSU wattages again if something goes wrong, but 600 W is so far fetched...
     

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